--- xen-3.0.0/tools/xenmon/xenbaked.c.compile	2005-12-06 09:05:34.000000000 -0500
+++ xen-3.0.0/tools/xenmon/xenbaked.c	2005-12-06 16:05:24.000000000 -0500
@@ -549,7 +549,10 @@
     for (n=0; n<ncpu; n++) {
 
       for (i=0; i<sizeof(_new_qos_data); i=i+pgsize)
-        write(qos_fd, dummy, pgsize);
+        if ((write(qos_fd, dummy, pgsize)) != pgsize) {
+	  PERROR(SHARED_MEM_FILE);
+	  exit(2);
+	}
 
       new_qos = (_new_qos_data *) mmap(0, sizeof(_new_qos_data), PROT_READ|PROT_WRITE, 
 				       MAP_SHARED, qos_fd, off);